US2529803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photochemical preparation of gamma benzene hexachloride
Assignee: Solvay SA
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Filing: 1946-08-23
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Granted: 1950-11-14
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Expires: 1966-08-23
Abstract
No abstract record available.
Inventors
- 👤 Gonze Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:55
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/013; C07C17/02; C07C17/38; C07C17/392; C07C23/00; C07C23/02; C07C23/10; C07C23/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A PROCESS OF PRODUCING A CONCENTRATED SOLUTION OF $ BENZENE HEXACHLORIDE IN BENZENE, COMPRISING INTRODUCING INTO A VAT CONTAINING BENZENE A QUANTITY OF CHLORINE GAS SUFFICIENT TO OBTAIN A SOLUTION APPROXIMATELY SATURATED WITH $ ISOMER, THE REACTION BEING CARRIED OUT UNDER THE INFLUENCEOF LIGHT, CONTINUOUSLY CIRCULATING THE REACTING LIQUID FROM SAID VAT TO A CRYSTALLIZER AND BACK INTO SAID VAT, COOLING THE LIQUID IN SAID CRYSTALLIZER, SEPARATING THE CRYSTALS OF THE A AND B ISOMERS IN SAID CRYSTALLIZER, WASHING SAID CRYSTALS WITH FRESH BENZENE, AND USING THE WASHING SOLUTION AS STARTING MATERIAL FOR FURTHER CHLORINATION, THE LIQUID AT THE END OF THE CHLORINATION COMPRISING A CONCENTRATED SOLUTION APPROXIMATELY SATURATED WITH $ ISOMER.
Claim 2
Dependent Claim
112 words
A PROCESS OF PRODUCING A CONCENTRATED SOLUTION OF $ BENZENE HEXACHLORIDE IN BENZENE, COMPRISING INTRODUCING INTO A VAT CONTAINING BENZENE A QUANTITY OF CHLORINE GAS SUFFICIENT TO OBTAIN A SOLUTION APPROXIMATELY SATURATED WITH $ ISOMER, THE REACTION BEING CARRIED OUT UNDER THE INFLUENCEOF LIGHT, CONTINUOUSLY CIRCULATING THE REACTING LIQUID FROM SAID VAT TO A CRYSTALLIZER AND BACK INTO SAID VAT, COOLING THE LIQUID IN SAID CRYSTALLIZER, SEPARATING THE CRYSTALS OF THE A AND B ISOMERS IN SAID CRYSTALLIZER, WASHING SAID CRYSTALS WITH FRESH BENZENE, AND USING THE WASHING SOLUTION AS STARTING MATERIAL FOR FURTHER CHLORINATION, THE LIQUID AT THE END OF THE CHLORINATION COMPRISING A CONCENTRATED SOLUTION APPROXIMATELY SATURATED WITH $ ISOMER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-13 | 1954-05-15 | 1954-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-13 | 1958-05-15 | 1958-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-13 | 1962-05-15 | 1962-11-14 | $7700.00 | Window Closed / Lapsed |